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305 lines
9.2 KiB
Python
305 lines
9.2 KiB
Python
# Python test set -- part 5, built-in exceptions
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from test.test_support import TestFailed, TESTFN, unlink
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from types import ClassType
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import warnings
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import sys, traceback, os
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print '5. Built-in exceptions'
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# XXX This is not really enough, each *operation* should be tested!
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# Reloading the built-in exceptions module failed prior to Py2.2, while it
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# should act the same as reloading built-in sys.
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try:
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import exceptions
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reload(exceptions)
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except ImportError, e:
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raise TestFailed, e
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def test_raise_catch(exc):
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try:
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raise exc, "spam"
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except exc, err:
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buf = str(err)
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try:
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raise exc("spam")
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except exc, err:
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buf = str(err)
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print buf
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def r(thing):
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test_raise_catch(thing)
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print getattr(thing, '__name__', thing)
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r(AttributeError)
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import sys
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try: x = sys.undefined_attribute
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except AttributeError: pass
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r(EOFError)
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import sys
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fp = open(TESTFN, 'w')
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fp.close()
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fp = open(TESTFN, 'r')
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savestdin = sys.stdin
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try:
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try:
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sys.stdin = fp
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x = raw_input()
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except EOFError:
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pass
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finally:
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sys.stdin = savestdin
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fp.close()
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r(IOError)
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try: open('this file does not exist', 'r')
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except IOError: pass
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r(ImportError)
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try: import undefined_module
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except ImportError: pass
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r(IndexError)
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x = []
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try: a = x[10]
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except IndexError: pass
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r(KeyError)
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x = {}
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try: a = x['key']
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except KeyError: pass
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r(KeyboardInterrupt)
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print '(not testable in a script)'
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r(MemoryError)
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print '(not safe to test)'
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r(NameError)
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try: x = undefined_variable
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except NameError: pass
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r(OverflowError)
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x = 1
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for dummy in range(128):
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x += x # this simply shouldn't blow up
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r(RuntimeError)
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print '(not used any more?)'
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r(SyntaxError)
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try: exec '/\n'
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except SyntaxError: pass
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# make sure the right exception message is raised for each of these
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# code fragments:
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def ckmsg(src, msg):
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try:
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compile(src, '<fragment>', 'exec')
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except SyntaxError, e:
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print e.msg
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if e.msg == msg:
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print "ok"
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else:
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print "expected:", msg
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else:
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print "failed to get expected SyntaxError"
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s = '''\
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while 1:
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try:
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pass
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finally:
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continue
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'''
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if sys.platform.startswith('java'):
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print "'continue' not supported inside 'finally' clause"
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print "ok"
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else:
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ckmsg(s, "'continue' not supported inside 'finally' clause")
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s = '''\
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try:
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continue
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except:
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pass
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'''
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ckmsg(s, "'continue' not properly in loop")
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ckmsg("continue\n", "'continue' not properly in loop")
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r(IndentationError)
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r(TabError)
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# can only be tested under -tt, and is the only test for -tt
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#try: compile("try:\n\t1/0\n \t1/0\nfinally:\n pass\n", '<string>', 'exec')
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#except TabError: pass
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#else: raise TestFailed
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r(SystemError)
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print '(hard to reproduce)'
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r(SystemExit)
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import sys
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try: sys.exit(0)
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except SystemExit: pass
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r(TypeError)
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try: [] + ()
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except TypeError: pass
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r(ValueError)
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try: x = chr(10000)
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except ValueError: pass
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r(ZeroDivisionError)
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try: x = 1/0
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except ZeroDivisionError: pass
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r(Exception)
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try: x = 1/0
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except Exception, e: pass
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# test that setting an exception at the C level works even if the
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# exception object can't be constructed.
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class BadException:
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def __init__(self):
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raise RuntimeError, "can't instantiate BadException"
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def test_capi1():
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import _testcapi
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try:
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_testcapi.raise_exception(BadException, 1)
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except TypeError, err:
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exc, err, tb = sys.exc_info()
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co = tb.tb_frame.f_code
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assert co.co_name == "test_capi1"
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assert co.co_filename.endswith('test_exceptions'+os.extsep+'py')
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else:
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print "Expected exception"
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def test_capi2():
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import _testcapi
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try:
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_testcapi.raise_exception(BadException, 0)
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except RuntimeError, err:
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exc, err, tb = sys.exc_info()
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co = tb.tb_frame.f_code
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assert co.co_name == "__init__"
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assert co.co_filename.endswith('test_exceptions'+os.extsep+'py')
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co2 = tb.tb_frame.f_back.f_code
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assert co2.co_name == "test_capi2"
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else:
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print "Expected exception"
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if not sys.platform.startswith('java'):
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test_capi1()
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test_capi2()
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unlink(TESTFN)
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# test that exception attributes are happy.
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try: str(u'Hello \u00E1')
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except Exception, e: sampleUnicodeEncodeError = e
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try: unicode('\xff')
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except Exception, e: sampleUnicodeDecodeError = e
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exceptionList = [
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( BaseException, (), { 'message' : '', 'args' : () }),
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( BaseException, (1, ), { 'message' : 1, 'args' : ( 1, ) }),
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( BaseException, ('foo', ), { 'message' : 'foo', 'args' : ( 'foo', ) }),
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( BaseException, ('foo', 1), { 'message' : '', 'args' : ( 'foo', 1 ) }),
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( SystemExit, ('foo',), { 'message' : 'foo', 'args' : ( 'foo', ),
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'code' : 'foo' }),
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( IOError, ('foo',), { 'message' : 'foo', 'args' : ( 'foo', ), }),
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( IOError, ('foo', 'bar'), { 'message' : '',
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'args' : ('foo', 'bar'), }),
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( IOError, ('foo', 'bar', 'baz'),
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{ 'message' : '', 'args' : ('foo', 'bar'), }),
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( EnvironmentError, ('errnoStr', 'strErrorStr', 'filenameStr'),
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{ 'message' : '', 'args' : ('errnoStr', 'strErrorStr'),
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'strerror' : 'strErrorStr',
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'errno' : 'errnoStr', 'filename' : 'filenameStr' }),
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( EnvironmentError, (1, 'strErrorStr', 'filenameStr'),
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{ 'message' : '', 'args' : (1, 'strErrorStr'),
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'strerror' : 'strErrorStr', 'errno' : 1,
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'filename' : 'filenameStr' }),
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( SyntaxError, ('msgStr',),
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{ 'message' : 'msgStr', 'args' : ('msgStr', ),
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'print_file_and_line' : None, 'msg' : 'msgStr',
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'filename' : None, 'lineno' : None, 'offset' : None,
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'text' : None }),
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( SyntaxError, ('msgStr', ('filenameStr', 'linenoStr', 'offsetStr',
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'textStr')),
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{ 'message' : '', 'args' : ('msgStr', ('filenameStr',
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'linenoStr', 'offsetStr', 'textStr' )),
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'print_file_and_line' : None, 'msg' : 'msgStr',
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'filename' : 'filenameStr', 'lineno' : 'linenoStr',
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'offset' : 'offsetStr', 'text' : 'textStr' }),
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( SyntaxError, ('msgStr', 'filenameStr', 'linenoStr', 'offsetStr',
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'textStr', 'print_file_and_lineStr'),
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{ 'message' : '', 'args' : ('msgStr', 'filenameStr',
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'linenoStr', 'offsetStr', 'textStr',
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'print_file_and_lineStr'),
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'print_file_and_line' : None, 'msg' : 'msgStr',
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'filename' : None, 'lineno' : None, 'offset' : None,
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'text' : None }),
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( UnicodeError, (),
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{ 'message' : '', 'args' : (), }),
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( sampleUnicodeEncodeError,
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{ 'message' : '', 'args' : ('ascii', u'Hello \xe1', 6, 7,
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'ordinal not in range(128)'),
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'encoding' : 'ascii', 'object' : u'Hello \xe1',
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'start' : 6, 'reason' : 'ordinal not in range(128)' }),
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( sampleUnicodeDecodeError,
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{ 'message' : '', 'args' : ('ascii', '\xff', 0, 1,
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'ordinal not in range(128)'),
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'encoding' : 'ascii', 'object' : '\xff',
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'start' : 0, 'reason' : 'ordinal not in range(128)' }),
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( UnicodeTranslateError, (u"\u3042", 0, 1, "ouch"),
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{ 'message' : '', 'args' : (u'\u3042', 0, 1, 'ouch'),
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'object' : u'\u3042', 'reason' : 'ouch',
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'start' : 0, 'end' : 1 }),
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]
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try:
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exceptionList.append(
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( WindowsError, (1, 'strErrorStr', 'filenameStr'),
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{ 'message' : '', 'args' : (1, 'strErrorStr'),
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'strerror' : 'strErrorStr',
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'errno' : 22, 'filename' : 'filenameStr',
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'winerror' : 1 }))
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except NameError: pass
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import pickle, random
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for args in exceptionList:
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expected = args[-1]
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try:
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if len(args) == 2: raise args[0]
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else: raise apply(args[0], args[1])
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except BaseException, e:
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for checkArgName in expected.keys():
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if repr(getattr(e, checkArgName)) != repr(expected[checkArgName]):
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raise TestFailed('Checking exception arguments, exception '
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'"%s", attribute "%s" expected %s got %s.' %
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( repr(e), checkArgName,
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repr(expected[checkArgName]),
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repr(getattr(e, checkArgName)) ))
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# test for pickling support
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new = pickle.loads(pickle.dumps(e, random.randint(0, 2)))
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for checkArgName in expected.keys():
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if repr(getattr(e, checkArgName)) != repr(expected[checkArgName]):
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raise TestFailed('Checking unpickled exception arguments, '
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'exception '
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'"%s", attribute "%s" expected %s got %s.' %
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( repr(e), checkArgName,
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repr(expected[checkArgName]),
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repr(getattr(e, checkArgName)) ))
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try:
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BaseException(a=1)
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except TypeError:
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pass
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else:
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raise TestFailed("BaseException shouldn't take keyword args")
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